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Finding the Fourth Proportional to 238,679.43, 357,963.71 and 70,154.67

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Solution

The fourth proportional to 238,679.43, 357,963.71 and 70,154.67 is: 105,215.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,679.43 : 357,963.71 = 70,154.67 : x
  2. Step 2: Convert to fraction form
    238,679.43/357,963.71 = 70,154.67/x
  3. Step 3: Cross multiply
    238,679.43x = 357,963.71 × 70,154.67
  4. Step 4: Simplify right side
    238,679.43x = 25,112,825,596.25
  5. Step 5: Solve for x
    x = 25,112,825,596.25/238,679.43
  6. Step 6: Final answer
    x = 105,215.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.